The distance between the underside of the forearm and bottom of the butt plate which sits on the rear bag is 5". I want a new front bag strictly for bench rest. So should I look for a bag where the underside of the forearm will sit 5" higher than the top of the rear bag for level shooting. However that probably wouldn't be the best for uphill shooting as the butt plate won' go any lower. Downhill, no problem as rear bag can be on its side or straight up. Perhaps a front bag that that flips over or turns would accommodate . Also would appreciate any recommendations as to type and brand of front bag.